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CBSE 12th Chemistry Exam Review: Check Paper Analysis Based on Teachers' & Students' Feedback

The CBSE Class 12 Chemistry exam 2025 was held today from 10:30 AM to 1:30 PM. Here is a detailed breakdown of the question paper pattern, exam structure, and passing criteria.

February 27, 2025 / 17:59 IST

The CBSE Class 12 Chemistry exam 2025 took place on Thursday, February 27, from 10:30 AM to 1:30 PM at 7,842 exam centres across India. This exam is a crucial part of the CBSE Class 12 board exams, which began earlier this month and will continue until April 4, 2025. To ensure smooth conduct, CBSE mandated that all students reach their exam centres before 10:00 AM, as the gates closed at this time.

Before writing their answers, students were given 15 minutes to read the question paper. The Chemistry theory exam carried 70 marks, while an additional 30 marks were allotted for internal assessment. The paper was designed to test students' conceptual understanding, numerical problem-solving skills, and application of theories.

Student Feedback

After the exam, students had mixed reactions about the paper's difficulty. Many found the organic chemistry section easy, especially those who had practised NCERT-based questions. However, some struggled with numerical problems in physical chemistry, as they required detailed calculations and a clear understanding of concepts.

The paper also included assertion-reasoning and case-based questions to test students' understanding and thinking skills. Some students felt time management was important since the paper was slightly long.

Vidush Gupta, a Class 12 student from Shiv Nadar School, Noida, said, “Most of the questions were directly from NCERT, but Section C required more time and careful thinking.” Praneel Munshi, another student, added, “Some questions from Electrochemistry were tricky and different from what we had seen in past papers, which made them a bit challenging.” Despite these few challenging moments, students felt the paper was balanced and manageable for those who had prepared consistently.

Khushi Mittal, a student of Seth Anandram Jaipuria School, Ghaziabad, said "The Chemistry Paper was moderate and based on NCERT. The numericals were straight forward. The definitions were more than expected. I found a problem in the case study."

Teachers’ and Experts’ Analysis

According to teachers and experts the paper was well-structured and in line with the CBSE syllabus. They appreciated the case-based and assertion-reasoning questions, as these encouraged understanding rather than memorisation. Experts said students who studied NCERT books and solved past papers would have found the exam easier.

Anshu Taneja, a teacher from Shiv Nadar School, Faridabad said that the CBSE Class 12 Chemistry paper was balanced and moderately difficult, featuring conceptual questions, numerical problems, and application-based scenarios. It was well-structured and aligned with the CBSE syllabus, emphasizing conceptual understanding over rote memorization. The exam required deep comprehension, analytical thinking, and problem-solving skills to achieve high marks.

While some students found the numerical problems in Physical Chemistry, challenging, others perceived the Organic Chemistry section as intricate, with questions that were not straightforward. Students who had thoroughly studied the textbook, consistently practiced questions, and developed a strong conceptual foundation could confidently approach the paper and navigate its challenges effectively.

Sarita Khokhar, HOD Chemistry, at Seth Anandram Jaipuria School, Ghaziabad, said, that the paper contained questions of varying difficulty levels, from easy to moderate. It was based entirely on the NCERT curriculum, making it easier for students who had thoroughly studied the NCERT textbook and solved practice questions to score high marks.

From Section C, some Students found Electrochemistry (3 mark) questions challenging, which was based on theory. All sections were moderate in terms of difficulty level. The case study-based question subpart (2 marks) had an error and students were confused because of that. Numerical calculations were simple and required little effort. The paper provided a well-balanced mix of understanding, application, and memory-based questions. Students were able to complete it within the allotted time, and are anticipating good marks.

Download Class 12 Chemistry Question Paper 2025

CBSE Class 12 Chemistry Paper 2025: Exam Structure

The exam followed the prescribed CBSE pattern and was divided into five sections:

  • Section A: 16 multiple-choice questions (MCQs) of 1 mark each (16 marks).
  • Section B: 5 very short answer questions of 2 marks each (10 marks).
  • Section C: 7 short answer questions of 3 marks each (21 marks).
  • Section D: 2 case-based questions of 4 marks each (8 marks).
  • Section E: 3 long answer questions of 5 marks each (15 marks).
CBSE Class 12 Passing Criteria

To pass, students must secure at least 33% in both theory and practical exams separately. The overall passing percentage for CBSE Class 12 is also 33%.

Archisha Yadav
Archisha Yadav is a sub editor with 1.5 years of experience in writing news articles on topics like education, jobs, and politics. She specialises in crafting simple, clear, and engaging stories that are easy to understand and hold the reader’s interest, making complex topics accessible and relatable to a larger audience.

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